(19)
(11) EP 2 672 144 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
01.07.2015 Bulletin 2015/27

(43) Date of publication A2:
11.12.2013 Bulletin 2013/50

(21) Application number: 13154520.4

(22) Date of filing: 08.02.2013
(51) International Patent Classification (IPC): 
F16H 35/10(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 30.05.2012 US 201213484226

(71) Applicant: Fairfield Manufacturing Company, Inc.
South Lafayette IN 47903 (US)

(72) Inventors:
  • Carlton, Kenneth E.
    West Lafayette, IN 47906 (US)
  • Buuck, Dennis
    Lafayette, IN 47905 (US)

(74) Representative: Puschmann Borchert Bardehle Patentanwälte Partnerschaft mbB 
Postfach 10 12 31
80086 München
80086 München (DE)

   


(54) Overload protection device


(57) An overload protection device in combination with a prime mover and gearbox transmission supplies torque through a gearbox transmission to a load. An input shaft with is driven by the prime mover and rotates therewith. An external spline on the input shaft mates with an input gear having an internal spline. Upon overload of the gearbox transmission, the input shaft fractures an annular groove in the input shaft. A bushing prevents travel of the portion of the input shaft which is driven by the prime mover and which continues to spin after the fracture.







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